1# Drawing a zone chart 2 3[Reference](http://wiki.pchart.net/doc.chart.drawzonechart.html) 4 5```php 6require '/path/to/your/vendor/autoload.php'; 7 8use CpChart\Data; 9use CpChart\Image; 10 11/* Create and populate the Data object */ 12$data = new Data(); 13for ($i = 0; $i <= 10; $i = $i + .2) { 14 $data->addPoints(log($i + 1) * 10, "Bounds 1"); 15 $data->addPoints(log($i + 3) * 10 + rand(0, 2) - 1, "Probe"); 16 $data->addPoints(log($i + 6) * 10, "Bounds 2"); 17 $data->addPoints($i * 10, "Labels"); 18} 19$data->setAxisName(0, "Size (cm)"); 20$data->setSerieDescription("Labels", "Months"); 21$data->setAbscissa("Labels"); 22$data->setAbscissaName("Time (years)"); 23 24/* Create the Image object */ 25$image = new Image(700, 230, $data); 26 27/* Turn off Antialiasing */ 28$image->Antialias = false; 29 30/* Add a border to the picture */ 31$image->drawRectangle(0, 0, 699, 229, ["R" => 0, "G" => 0, "B" => 0]); 32 33/* Write the chart title */ 34$image->setFontProperties(["FontName" => "Forgotte.ttf", "FontSize" => 11]); 35$image->drawText(150, 35, "Size by time generations", ["FontSize" => 20, "Align" => TEXT_ALIGN_BOTTOMMIDDLE]); 36 37/* Set the default font */ 38$image->setFontProperties(["FontName" => "pf_arma_five.ttf", "FontSize" => 6]); 39 40/* Define the chart area */ 41$image->setGraphArea(40, 40, 680, 200); 42 43/* Draw the scale */ 44$image->drawScale([ 45 "LabelSkip" => 4, 46 "XMargin" => 10, 47 "YMargin" => 10, 48 "Floating" => true, 49 "GridR" => 200, 50 "GridG" => 200, 51 "GridB" => 200, 52 "DrawSubTicks" => true, 53 "CycleBackground" => true 54]); 55 56/* Turn on Antialiasing */ 57$image->Antialias = true; 58 59/* Draw the line chart */ 60$image->drawZoneChart("Bounds 1", "Bounds 2"); 61$data->setSerieDrawable(["Bounds 1", "Bounds 2"], false); 62 63/* Draw the line chart */ 64$image->drawStepChart(); 65 66/* Write the chart legend */ 67$image->drawLegend(640, 20, ["Style" => LEGEND_NOBORDER, "Mode" => LEGEND_HORIZONTAL]); 68 69/* Render the picture (choose the best way) */ 70$image->autoOutput("example.drawZoneChart.png"); 71``` 72
